I posted a link to a US site ages ago. Problems with this type of compensator is old news across the pond.
Both the older style compensators Harley Standard and Screamin Eagle upgrade are just about capable of damping a 1450 cc or Harley tuned engine. It's a rather elegant but stupid design.
There was no chance it would ever cope with the S and S unit and I am at a bit of a loss how Morgan got bitten on this one. I had a very encouraging call from the new Morgan customer liaison team the other day. I did tell them that I thought perhaps that Morgan need to re-learn some of the engineering they got right in the past. I am sure they are on the right track now. I do agree however that the new compensator should be supplied as a warranty unit. I couldn't wait for that.